On August 3, 2002 (June 25, 2002 lunar calendar), Legionnaires' disease was discovered in England. "Legionnaires' disease" enlarged picture On August 3, 2002, Legionnaires' disease, or lobar pneumonia, was found in the Cumbria area of northwest England. It has killed one person and infected at least 39 people. Local health officials say the number of cases of lobar pneumonia is continuing to rise, and it is feared that hundreds or more people have been infected. From the confirmed cases, most of the patients are between the ages of 47 and 89, and no children have been found to have contracted the disease. This is the largest outbreak of lobar pneumonia in the UK in recent decades. Legionnaires' disease is a bacterial pneumonia caused by Legionella bacteria that mainly breed in humid environments such as water storage systems and air-conditioning water.